Sharjah24 - AFP: Residents said that fighting erupted in the capital and a southern city of Sudan on Wednesday, driving more people to risky border crossings in search of safety.
Those unable to escape grapple with shortages of food and other essentials, surviving only thanks to Sudanese charity networks among friends and neighbours, as the United States expressed cautious optimism over talks to secure the safe delivery of aid.
"We were woken by explosions and heavy artillery fire," one resident of Khartoum's sister city Omdurman told AFP as smoke drifted over the capital.
Other witnesses reported new air raids over the capital and counter-fire from anti-aircraft guns, in the fourth week of battles between army chief Abdel Fattah al-Burhan and his former deputy Mohamed Hamdan Daglo, who commands the paramilitary Rapid Support Forces (RSF).
More than 750 people have been killed in the fighting which has wounded more than 5,000, according to the Armed Conflict Location and Event Data Project.
In El Obeid, the North Kordofan state capital about 350 kilometres (190 miles) southwest of Khartoum, residents on Wednesday also reported fighting and explosions.
More than 700,000 people are now internally displaced by battles that began on April 15, and another 150,000 have fled the country, UN agencies said this week.
An average of 1,000 are registered every day by the International Organization for Migration at the dusty, sun-scorched Ethiopian border town of Metema.